Cool concept! The lasso is a neat take on the space invaders sort of formula. I like the idea, I bet it'd be even more fun with a controller. Feels good taking out a whole row.
I think the only thing about the lasso though is ship movement. Maybe allowing the ship to move while lassoing, but much slower. It makes it so you have a chance to dodge enemy shots instead of having to fully commit to your position while you loop enemies. Music is cool too, live band?